diff --git a/api/files/serializers.py b/api/files/serializers.py
index 9e92bca2037..3e2569f9693 100644
--- a/api/files/serializers.py
+++ b/api/files/serializers.py
@@ -47,7 +47,7 @@
     ShowIfVersion,
 )
 from api.base.utils import absolute_reverse, get_user_auth
-from api.base.exceptions import Conflict
+from api.base.exceptions import Conflict, JSONAPIException
 from api.base.versioning import get_kebab_snake_case_field
 
 class CheckoutField(ser.HyperlinkedRelatedField):
@@ -370,6 +370,13 @@ def get_file_guid(self, obj):
                 return guid._id
         return None
 
+    def get_file_guid_or_error(self, obj):
+        if obj:
+            guid = obj.get_guid()
+            if guid:
+                return guid._id
+        raise JSONAPIException
+
     def get_absolute_url(self, obj):
         return api_v2_url('files/{}/'.format(obj._id))
 
@@ -395,7 +402,7 @@ class FileSerializer(BaseFileSerializer):
 
     cedar_metadata_records = RelationshipField(
         related_view='files:file-cedar-metadata-records-list',
-        related_view_kwargs={'file_id': '<_id>'},
+        related_view_kwargs={'file_guid': 'get_file_guid_or_error'},
     )
 
     def get_target_type(self, obj):
diff --git a/api/files/urls.py b/api/files/urls.py
index 0266e9c2750..3cc32c8f516 100644
--- a/api/files/urls.py
+++ b/api/files/urls.py
@@ -6,7 +6,7 @@
 
 urlpatterns = [
     re_path(r'^(?P<file_id>\w+)/$', views.FileDetail.as_view(), name=views.FileDetail.view_name),
-    re_path(r'^(?P<file_id>\w+)/cedar_metadata_records/$', views.FileCedarMetadataRecordsList.as_view(), name=views.FileCedarMetadataRecordsList.view_name),
+    re_path(r'^(?P<file_guid>\w+)/cedar_metadata_records/$', views.FileCedarMetadataRecordsList.as_view(), name=views.FileCedarMetadataRecordsList.view_name),
     re_path(r'^(?P<file_id>\w+)/versions/$', views.FileVersionsList.as_view(), name=views.FileVersionsList.view_name),
     re_path(r'^(?P<file_id>\w+)/versions/(?P<version_id>\w+)/$', views.FileVersionDetail.as_view(), name=views.FileVersionDetail.view_name),
 ]
diff --git a/api/files/views.py b/api/files/views.py
index cbb8e421659..dd084748c84 100644
--- a/api/files/views.py
+++ b/api/files/views.py
@@ -193,7 +193,7 @@ class FileCedarMetadataRecordsList(JSONAPIBaseView, generics.ListAPIView, ListFi
     view_name = 'file-cedar-metadata-records-list'
 
     def get_default_queryset(self):
-        return CedarMetadataRecord.objects.filter(guid___id=self.kwargs['file_id'])
+        return CedarMetadataRecord.objects.filter(guid___id=self.kwargs['file_guid'])
 
     def get_queryset(self):
         return self.get_queryset_from_request()